Question

solve each system of equations 2x-3y=z
-7x+4y=6

Answer 1

3 variables?

Answer 2

2x-3y=2
-7x+4y=6

Answer 3

http://www.wolframalpha.com/input/?i=2x-3y%3D2+-7x%2B4y%3D6

Answer 4

how u got

Answer 5

2x-3y=2
-7x+4y=6

U have to get rid of one of the variables.

To do this u can try to make the coefficients of one of the variables the same.

If you multiply the first equation by 4 and the second one by 3, then u can add the two new equations together and the y's will disappear.

Answer 6

how we know to multiply 4 and 3

Answer 7

To make the coefficients of y both equal to 12

Answer 8

can u do please i did but igot x only

Answer 9

Correct, now u have x put that value into one of your original equations and u will get y.